As part of its "Programme for the prevention of health hazards caused by industrial substances", the Berufsge- nossenschaft der chemischen Industrie (BG Chemie, Em- ployment Accident Insurance Fund of the Chemical Indus- try) began in 1977 to investigate the toxicity of those chemicals which are widely used, have many different ap- plications and are suspected of being dangerous to health, in particular of having long-term effects. The in- vestigations consist of a literature search and - depending on the results - commissions of experimental studies. It is hoped by means of this testing to close gaps in our know- ledge and to increase the scientific validity of the required risk assessments. The results of the toxicological in- vestigations carried out by BG Chemie, and the resulting substance assessments have been published in German since 1987 in the form of 113 "Toxikologische Bewer- tungen" ("Toxicological Evaluations") up to now. In order to make this useful information internation- ally available, BG Chemie began in October 1990 to pub- lish them as a book series in English, of which the fifth vol- ume (containing 12 individual evaluations) is presented here. Therefore for 72 existing chemicals "Toxicological Evaluations" are available in English at the moment, a fur- ther 38 are in preparation and will be published soon.

As part of its programme for the prevention of health hazards caused by industrial work substances, the Berufsgenossenschaft der chemischen Industrie (BG Chemie) began in 1977 to investigate the toxicity of those substances which are widely used, have many different applications and are suspected of being dangerous to health, in particular of having long-term effects on health. It is hoped by means of this testing to close gaps in our knowledge and to increase the scientific validity of the required risk assessments. The results of the toxicological investigations carried out by BG Chemie, and the resulting substance assessments have been published in West Ger many since 1987 in the form of "Toxicological Evaluations". In order to make this useful information internationally available, the second volume (containing individual evalua tions of 15 substances) is now being published in English. The first volume containing individual evaluations of 19 substances was published in October 1990. Because of the short time between publishing volumes 1 and 2, printing of the "Introduction" (consisting of a general overview of the programme, lists with names of people involved as well as substances under investigation was abandoned in volume 2. If there more detailed information is required, see volume 1 or contact BG Chemie at first hand. The publication of further individual evaluations and, if necessary, reassess ments of previously published evaluations is planned.

As part of its "Programme for the prevention of health haz- ards caused by industrial substances", the Berufsgenossen- schaft der chemischen Industrie (BG Chemie, Employment Accident Insurance Fund of the Chemical Industry) began in 1977 to investigate the toxicity of those chemicals which are widely used, have many different applications and are suspected of being dangerous to health, in particular of hav- ing long-term effects. The investigations consist of a litera- ture search and - depending on the results - commissions of experimental studies. It is hoped by means of this testing to close gaps in our knowledge and to increase the scientif- ic validity of the required risk assessments. The results of the toxicological investigations carried out by BG Chemie, and the resulting substance assessments have been published in German since 1987 in the form of 169 "Toxikologische Bewertungen" ("Toxicological Evaluations") up to now. In order to make this useful information internationally available, BG Chemie began in October 1990 to publish as a book series in English, of which the eighth volu- them me (containing 14 individual evaluations) is presented here. Therefore for 110 existing chemicals "Toxicological Evalua- tions" are available in English at the moment, a further 54 are in preparation and will be published soon.

Toxicological Evaluations are critically assessed data and recommendations for occupational safety officers, industrial hygienists, and human and animal toxicologists. They are compiled and constantly reviewed under internationally coordinated programs for establishing the risk potential of existing chemicals to prevent health hazards at the working place. In Volume 13, data for the following chemicals are published: Benzyl chloride, Triethylenediamine, 2-Amino-6-methoxybenzothiazol, Fluorobenzene, alpha-Naphthylamine, Triethylphosphite, Diethylphosphite, Diphenyl-2-ethylhexyl phosphate, alpha-Chlorpropionic acid and sodium-alpha-chloropropionate, Zinc ethylphenyl dithiocarbamate, Dimethoxy thiophosphonyl chloride, p-Chlorbenzotrifluoride.

Toxicological Evaluations are critically assessed data and recommendations for occupational safety officers, industrial hygienists, and human and animal toxicologists. They are compiled and constantly reviewed under internationally coordinated programs for establishing the risk potential of existing chemicals to prevent health hazards at the working place. In Volume 11, data for the following chemicals are published: o-Phthalodinitrile, Dimethylaminopropionitrile, Anthraquinone, Triisobutylphosphate, 4-Nitro-4'-aminodiphenylamine-2-sulfonic acid, 2,5-Dimethoxy-4-chloreanilino, Antimony-(III)-chloride, Antimony-(V)-chloride, Antimony-(V)-oxide, N, N-Dicyclohexyl-2-benzothiazolesulfenamide, Ethenesulfonic acid, sodium salt.

Toxicological Evaluations are critically assessed data and recommendations for occupational safety officers, industrial hygienists, and human and animal toxicologists. They are compiled and constantly reviewed under internationally coordinated programs for establishing the risk potential of existing chemicals to rpevent health hazards at the working place. In Volume 12, data for the following chemicals are published: Ethylenthiourea, N,N'-Di-sec-butyl-p-phenylenediamine, p-Nitrosophenol, Dichlorotoluene, 2,4-Dichlorotoluene, 3,4-Dichlorotoluene, Glyoxal, Chloracetyl chloride, Copper phthalocyanine, Dimethylol dihydroxyethylene urea, Acetoacetanilide, Thiourea, 3,4-Dichlorobutene-1

As part of its programme for the prevention of health hazards caused by industrial work substances, the Berufsgenossenschaft der Chemischen Industrie began in 1977 to investigate the toxicity of those existing substances which are in widespread use, have many different applica tions and are suspected of being possibly dangerous to health, in particular of having long-term effects on health. It is hoped by means of this testing to close gaps in our knowledge and to increase the scientific validity of the required risk assessments. The results of the toxicological investigations carried out by the Berufsgenossenschaft der Chemischen Industrie, and the resulting substance assess ments have been published in West Germany since 1987 in the form of "Toxicological Evaluations". In order to make this useful information internationally available, the "Toxicological Evaluations" are now being published in English. This first volume contains individual evaluations of 21 substances. The publication of further individual evaluations and, if necessary, reassessments of previously published evaluations is planned.